package com.sky.service.impl;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.service.EmployeeService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

import static com.sky.constant.PasswordConstant.DEFAULT_PASSWORD;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对 MD5加密后比对
        password = DigestUtils.md5DigestAsHex(password.getBytes(StandardCharsets.UTF_8));
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void saveEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置默认密码12345
        employee.setPassword(DigestUtils.md5DigestAsHex(DEFAULT_PASSWORD.getBytes(StandardCharsets.UTF_8)));
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        //employeeMapper.insert(employee);
        this.save(employee);

    }

    @Override
    public Page<Employee> queryPageEmployee(EmployeePageQueryDTO employeePageQueryDTO) {
        Page<Employee> page =new Page();
        page.setSize(employeePageQueryDTO.getPageSize());
        page.setCurrent(employeePageQueryDTO.getPage());
        Page<Employee> page1 = this.lambdaQuery().like(StringUtils.isNotEmpty(employeePageQueryDTO.getName()), Employee::getName, employeePageQueryDTO.getName())
                .orderByDesc(Employee::getCreateTime).page(page);
        return page1;
    }

    @Override
    public void enableAndDisabledEmployee(Long id, Integer status) {
        this.lambdaUpdate().set(Employee::getStatus,status)
                .set(Employee::getUpdateUser,BaseContext.getCurrentId())
                .set(Employee::getUpdateTime, LocalDateTime.now())
                .eq(Employee::getId,id).update();
    }

    @Override
    public Employee queryById(Long id) {
        return this.getById(id);
    }

    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee emp = new Employee();
        BeanUtils.copyProperties(employeeDTO,emp);
        this.updateById(emp);
    }

    public static void main(String[] args){
        String password = DigestUtils.md5DigestAsHex("123456".getBytes(StandardCharsets.UTF_8));
        System.out.println(password);
    }
}
